11-26-2015 11:08 AM - edited 11-26-2015 11:18 AM
Here's the link to the Lenovo Yoga 2 Pro Hardware Maintenance Manual: https://support.lenovo.com/docs/um019262
The relevant information is on page 37 of 76 (pdf viewer page) or page 33 of the actual document (as numbered) for the screw information and a walk-through of how to remove them.
Here is the screw and torque information if you prefer not to view the PDF directly because of security concerns:
Screw (quantity) - M2 × 5 mm, flat-head, nylok-coated (11)
Color - Silver
Torque - 1.85+/-0.15 kgf*cm
If you want to purchase these screws from the aforementioned "laptopscrews.com" here are links to the screws, lock-tight coating, and the T5 (star-shaped) torque screw driver required to remove the old and/or install the new ones:
Screws - M2x5mm - http://www.laptopscrews.com/M2x5.htm (chose one of the top two so the head seats below the bevel of the case when screwed in all the way, silver or black in color per your preference)
Threadlock (loctite) - http://www.laptopscrews.com/Threadlock.htm (this will last you forever, but like thermal paste for processors, it's worth the purchase)
Screw Driver - (T5) - http://www.amazon.com/Screwdriver-Socket-Screw-Driver-Double-Sided/dp/B005XFTU9Y (I didn't see anything not sold out on the laptopscrews site so here is a simple and cheap 8-in-1 star shaped (Tn) screw driver set. There are also 32-in-1's out there for ~$15USD on Amazon or NewEgg.com that could be a better purchase, but that's up to you really).
*Note: If you are purchasing please verify the above as I provide no warranty and I am otherwise just another ghost on the internet and not infallible. That being said I only have the best interests in mind considering I too am having this issue with my (future) wife's Yoga Pro 2.
Hope this helps anyone else who stumbles upon this thread! (pun intended )
Edit: Updated formating and some further explaination. And Happy Turkey day to you and yours!
05-03-2016 07:54 AM - edited 05-03-2016 09:33 AM
Aha! Thank you youITguy for the information and excellent detective work!
I have an alternate suggestion for the replacement screw, however. I found this one:
It is a "wafer head" torx M2 screw, with a 4.5mm length. I know that the hardware manual specifies 5mm, but I suspect that may be a loose figure, because the 5mm ones have a Phillips screwhead rather than Torx, and I measured mine and if you want to be 100% precise it is in fact 4.5mm long. (You measure from the base of the head down to the end.) So it looks like the 4.5mm version is the more exact match for a replacement, imho. Though, of course, it appears you can't go wrong either way, so disregard if you've already ordered.
I also found a slightly cheaper threadlocker here:
It's a Loctite 242 rather than 222, which makes it "medium strength" rather than light strength. But a) the 222 is up to twice as expensive, and b) haven't we already established we need MORE locking strength?
Just my two bucks.
07-20-2016 08:27 AM - edited 07-20-2016 08:31 AM
After gathering info from various forums, I found this to be the best solution for Yoga 3 (not 2) Pro replacement screws for the bottom panel of the laptop. Go to www.metricscrews.us, click on "Metric Screws", then "M2 Screws", then "M2x3.5mm". The one I got was the "White Zinc Wafer Head Screw". They're very cheap as well! Hope this helps!
08-06-2016 11:38 AM